452454451021 has 4 divisors (see below), whose sum is σ = 476267843200. Its totient is φ = 428641058844.

The previous prime is 452454451013. The next prime is 452454451039. The reversal of 452454451021 is 120154454254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 452454451021 - 2³ = 452454451013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452454451051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11906696061 + ... + 11906696098.

It is an arithmetic number, because the mean of its divisors is an integer number (119066960800).

Almost surely, 2^452454451021 is an apocalyptic number.

It is an amenable number.

452454451021 is a deficient number, since it is larger than the sum of its proper divisors (23813392179).

452454451021 is a wasteful number, since it uses less digits than its factorization.

452454451021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23813392178.

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 452454451021 in words is "four hundred fifty-two billion, four hundred fifty-four million, four hundred fifty-one thousand, twenty-one".